Where should elevated pressure piping labels be placed?

Where should elevated pressure piping labels be placed?

• A. Every 20 feet
• B. Every 10 feet, at changes of direction, and both sides of penetrations
• C. Only at changes of direction
• D. Only near meters

Answer: (B)

Label elevated pressure gas piping at 10-foot intervals, at every change of direction, and on both sides of any penetration through walls or floors. This placement ensures the presence and hazard of elevated-pressure lines are clearly visible from any angle along the route, including around bends and as the pipe passes through barriers. It helps installers, maintenance personnel, and emergency responders quickly identify high‑pressure piping and avoid inadvertent damage or unsafe work. Labeling only at changes of direction or only near meters could leave portions of the run unmarked or obscure the label on one side of a penetration, reducing visibility when viewed from different directions. Therefore, the recommended practice is to mark every 10 feet, at direction changes, and on both sides of penetrations.

Label elevated pressure gas piping at 10-foot intervals, at every change of direction, and on both sides of any penetration through walls or floors. This placement ensures the presence and hazard of elevated-pressure lines are clearly visible from any angle along the route, including around bends and as the pipe passes through barriers. It helps installers, maintenance personnel, and emergency responders quickly identify high‑pressure piping and avoid inadvertent damage or unsafe work. Labeling only at changes of direction or only near meters could leave portions of the run unmarked or obscure the label on one side of a penetration, reducing visibility when viewed from different directions. Therefore, the recommended practice is to mark every 10 feet, at direction changes, and on both sides of penetrations.